tree insulator

14 LETTERS · STARTS WITH T

tree insulator is a valid 14-letter word worth 13 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1R1E1E1I1N1S1U1L1A1T1O1R1

1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =13 PTS

DOUBLE WORD → 26TRIPLE WORD → 39

MEANING

What does tree insulator mean?